There may be no single cause of bipolar disorder (aka manic depression). Instead, research indicates the causes of bipolar disorder are probably a combination of biochemical, genetic and environmental factors that may trigger and perpetuate the chemical imbalances in the brain.
Net worth: $829 million. Telecommunications mogul Strive Masiyiwa is widely regarded as the richest man in Zimbabwe and is one of the richest men in Africa with a net worth of more than US$800 million.
28 Likes Like. The African continent has produced many wealthy people; with over 28 known billionaires. According the Forbesâ 2015 list of Africaâs 50 Richest, Nigerian business magnate Aliko Dangote remains the richest person in Africa and the richest black man in the world.Here are the richest people in Africa as of 2015, according to Forbes.Gerrit Thomas âGTâ Ferreira is a self-made millionaire who co-founded Rand Consolidated Investing in 1977 along with Laurie Dippenaar and Paul Harris. After a series successful mergers and acquisitions, FirstRand came into existence in 1990.ccording the Forbesâ 2015 list of Africaâs 50 Richest, Nigerian business magnate Aliko Dangote remains the richest person in Africa and the richest black man in the world.